Improvements of the Inverse Compositional Algorithm for Parametric Motion Estimation

Thibaud Briand (1) , Gabriele Facciolo (2) , Javier Sanchez (3)

1 Département de mathématiques, ENS Cachan
2 CMLA - Centre de Mathématiques et de Leurs Applications
3 UAB - Universitat Autònoma de Barcelona = Autonomous University of Barcelona = Universidad Autónoma de Barcelona

In this work, we propose several improvements of the inverse compositional algorithm for parametric registration. We propose an improved handling of boundary pixels, a different color handling and gradient estimation, and the possibility to skip scales in the multiscale coarse-to-fine scheme. In an experimental part, we analyze the influence of the modifications. The estimation accuracy is at least improved by a factor 1.3 while the computation time is at least reduced by a factor 2.2 for color images.

Mots clés: inverse compositional algorithm; parametric motion estimation; boundary handling; gradient estimation

Domaines: Traitement des images [eess.IV]; Traitement du signal et de l'image [eess.SP]

Thibaud Briand, Gabriele Facciolo, Javier Sanchez. Improvements of the Inverse Compositional Algorithm for Parametric Motion Estimation. Image Processing On Line, 2018, pp.2018 - 2029. ⟨10.5201/ipol.2018.222⟩. ⟨hal-01959765⟩